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4 Operation and maintenance
883 Basic IC plus
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Reinserting the inlet valve into the pump head
￭ Insert the inlet valve into the inlet valve holder (the seal must be
visible) (1).
￭ Screw the inlet valve holder up into the pump head (2) and
tighten it firmly by hand and then retighten it one additional ¼
turn using the adjustable wrench (3).
￭ Refasten the connection capillary to the connection of the eluent
aspiration tubing (18-7).
Removing the pump head
Accessories
For this step, you need the following accessories:
￭ 4 mm hex key (6.2621.030)
Removing the pump head
Prerequisites:
￭ Is the high-pressure pump switched off?
￭ Has the pressure been released?
￭ Is the instrument switched off?
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